These are the How-To instructions for the Polymer80 jig and lower systems.

Select the instructions based on the version of the product you own. Please note that while the videos are very informative, you will need to download and read the PDF instructions. The videos do not contain the sizing info that is required to properly mill out the lower receiver. We urge you to use the videos as a secondary visual guide after reading the instructions.

G100 (legacy product) 

• G100 PDF: Click Here

• How-to Video: Click Here

G150 – Phoenix versions 1 and 2 (Use for RL556v3™)

• G150 Phoenix (All Black Core) PDF: Click Here

• How-to Video: Click Here

RJ556U Universal Jig for Milspec 80% AR-15 Lower Receivers 

• RJ556U Instructions PDF: Click Here

.308 WarrHogg Lower Receiver

• WarrHogg instructions (PDF): Click Here

PF940V1.5 80% Pistol Frame

• PF940V1.5 80% Polymer Pistol Frame Instructions (PDF): Click Here

PF-Series™ 80% Pistol Frames

• PF9SS™ Single Stack 80% Pistol Frame Kit Instructions (PDF): Click Here

• PF940SC™ SubCompact 80% Pistol Frame Kit Instructions (PDF): Click Here

• PF940C™ Compact 80% Pistol Frame Kit Instructions (PDF): Click Here

• PF940v2™ Full Size 80% Pistol Frame Kit Instructions (PDF): Click Here

• PF45™ Large 80% Pistol Frame Kit Instructions (PDF): Click Here

PF320PTEX™ Grip Module

• PF320PTEX™ Grip Module Installation Guide (PDF): Click Here

BBS Rifle Kits and 80% Lower Receiver Builds:

Tips, Tricks and Techniques

How to Build AR15s: Several great links and articles are included below to get you started. Choose which article fits your learning style. These articles also can be utilized for the .308 WarrHogg rifle build as well.

Please note some key differences on our G150 lower receiver as you read through the articles.  When they discuss the bolt catch assembly, our system uses a stainless steel dowel pin and set screw rather than the roll pin that comes with most lower parts kits. Just ignore these sections that don’t apply.

Install the spring, bolt catch plunger, and bolt catch using our stainless dowel pin to hold the bolt catch in place. Finally, install the small black set screw to secure the dowel pin. A moderate amount of force is required to start threading the set screw.  Our lower receivers also use a square nut and screw to install the pistol grip rather than the screw and washer provided in most lower parts kits.

Marine Gun Builder (MGB) Build Video Series

1. Builders Check list
2. Glock Armorer tool guide
3. Perfect Pins
4. Pin Masters / Pin Jedi
5. Tab Tastic
6. P80 RSA Channel
7. Blemish Removal
8. Polish like a Pro Frame
9. Squeaky Slide Resolved
10. Pro Frame assembly
11. Polishing & Prepping for Perfection
12. Channel Masters
13. Rear Rail Fixes
14. Locking block fix
15. Ejection / Extraction resolved
16. Pro Slide Assembly
17. Glock P80 Lubrication
18. Glock FTQ Function Test Safety Checks
19. PF SS9 Duel Build (G43)
20. 80P Build G17
21. Strike 80 Build
22. G44 .22lr disassembly-assembly
23. Polymer 80 PF45 Trigger Housing Fix Actual fix starts at 6:00 on the vid.
24. Corys Channel Technique Article no video. Highly recommend this channel method it is the adopted newest method used by MGB.
25 Poly 80 Colors, Models & Compatibility

3. Perfect Pins

6. Polymer 80 Glock 19 Pro Build

9. Polymer80 Glock Squeaky Slide Solved